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Analysis

  • max time kernel
    143s
  • max time network
    171s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27/11/2022, 15:44

General

  • Target

    75554b1d603964c5f75fcb3f734da5bba08095476ba195258dfa1e57ac58f33f.exe

  • Size

    831KB

  • MD5

    b7627f60b9d8e30ddd17edb61b2f2c80

  • SHA1

    a5456c6b1e01ec8e4d23ed078b9955d6544f058f

  • SHA256

    75554b1d603964c5f75fcb3f734da5bba08095476ba195258dfa1e57ac58f33f

  • SHA512

    263f49650229e035dac4a53fc5312715fb6f636582d80a5efb5c47eefec9a7be5285e4da6460444ae1526f4bdfa389278afaf99c2124e160bc81baffa9abbefe

  • SSDEEP

    24576:NrfGR2wDeRMT9TDm41FyHFyzdq+eDnkoS34pXROea:NYYRMT9TDm41G2eoLSXN

Score
8/10

Malware Config

Signatures

  • Drops file in Drivers directory 1 IoCs
  • Executes dropped EXE 5 IoCs
  • Loads dropped DLL 14 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Drops file in System32 directory 5 IoCs
  • Drops file in Program Files directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Modifies data under HKEY_USERS 1 IoCs
  • Runs net.exe
  • Suspicious behavior: LoadsDriver 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 33 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\75554b1d603964c5f75fcb3f734da5bba08095476ba195258dfa1e57ac58f33f.exe
    "C:\Users\Admin\AppData\Local\Temp\75554b1d603964c5f75fcb3f734da5bba08095476ba195258dfa1e57ac58f33f.exe"
    1⤵
    • Drops file in Drivers directory
    • Loads dropped DLL
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • Suspicious use of WriteProcessMemory
    PID:5016
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1244
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:2800
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:2932
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:176
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:3892
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:4316
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:4360
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:2116
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:2552
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:5000
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:4140
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Modifies data under HKEY_USERS
            • Suspicious use of AdjustPrivilegeToken
            PID:2668
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1896

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\Users\Admin\AppData\Local\Temp\nsu2B58.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • C:\Users\Admin\AppData\Local\Temp\nsu2B58.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsu2B58.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsu2B58.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsu2B58.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsu2B58.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsu2B58.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsu2B58.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsu2B58.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            fbe3a0935caf92ee257fc5ac164f0e15

            SHA1

            d711ccf58e412ff6dd4d6db96da1c0bf87a7b0b5

            SHA256

            4b4e67ea13bb2a5f835c005ad638d96ec207fa242c32dacb497591dd6b630e0f

            SHA512

            66b0a56bcd6e684be83804ef9cb0dcd65850177bedb05989b946f385ea0761d58b4a27c85e3e45e806f1f65da95f9e103e760dcb93c93ea3c08aa11a24145a3e

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            fbe3a0935caf92ee257fc5ac164f0e15

            SHA1

            d711ccf58e412ff6dd4d6db96da1c0bf87a7b0b5

            SHA256

            4b4e67ea13bb2a5f835c005ad638d96ec207fa242c32dacb497591dd6b630e0f

            SHA512

            66b0a56bcd6e684be83804ef9cb0dcd65850177bedb05989b946f385ea0761d58b4a27c85e3e45e806f1f65da95f9e103e760dcb93c93ea3c08aa11a24145a3e

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            fbe3a0935caf92ee257fc5ac164f0e15

            SHA1

            d711ccf58e412ff6dd4d6db96da1c0bf87a7b0b5

            SHA256

            4b4e67ea13bb2a5f835c005ad638d96ec207fa242c32dacb497591dd6b630e0f

            SHA512

            66b0a56bcd6e684be83804ef9cb0dcd65850177bedb05989b946f385ea0761d58b4a27c85e3e45e806f1f65da95f9e103e760dcb93c93ea3c08aa11a24145a3e

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            fbe3a0935caf92ee257fc5ac164f0e15

            SHA1

            d711ccf58e412ff6dd4d6db96da1c0bf87a7b0b5

            SHA256

            4b4e67ea13bb2a5f835c005ad638d96ec207fa242c32dacb497591dd6b630e0f

            SHA512

            66b0a56bcd6e684be83804ef9cb0dcd65850177bedb05989b946f385ea0761d58b4a27c85e3e45e806f1f65da95f9e103e760dcb93c93ea3c08aa11a24145a3e

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            427KB

            MD5

            31214f9ce531da9b12b14f00721ee8ec

            SHA1

            ada8702f94b4ce056d0f4dcaaa3938a97a11ea90

            SHA256

            f647c0ed798bd10b1489ff8eb6ebcf222323602314f9f2ab18c800f8cf6b6878

            SHA512

            4f9664dfc99b02609b44f801e097181b15fe1081d7eeff914ac5d322434594aedce5676859cbb7dd0388664ba11df008eae5a0688c6a1cf78d97b80e9c007f2b

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            427KB

            MD5

            31214f9ce531da9b12b14f00721ee8ec

            SHA1

            ada8702f94b4ce056d0f4dcaaa3938a97a11ea90

            SHA256

            f647c0ed798bd10b1489ff8eb6ebcf222323602314f9f2ab18c800f8cf6b6878

            SHA512

            4f9664dfc99b02609b44f801e097181b15fe1081d7eeff914ac5d322434594aedce5676859cbb7dd0388664ba11df008eae5a0688c6a1cf78d97b80e9c007f2b

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            427KB

            MD5

            31214f9ce531da9b12b14f00721ee8ec

            SHA1

            ada8702f94b4ce056d0f4dcaaa3938a97a11ea90

            SHA256

            f647c0ed798bd10b1489ff8eb6ebcf222323602314f9f2ab18c800f8cf6b6878

            SHA512

            4f9664dfc99b02609b44f801e097181b15fe1081d7eeff914ac5d322434594aedce5676859cbb7dd0388664ba11df008eae5a0688c6a1cf78d97b80e9c007f2b

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            137KB

            MD5

            04ded0e98606bcc133f3a5158846d3f6

            SHA1

            3af176f41c969f17ec4f4e5fd4334ca962e87928

            SHA256

            6506fd57dcf549fc755f26660757d363a789a65a0eed0fd1f42772f84bbeae5f

            SHA512

            07c47288658fbc41fa5e5db8d673f52aa8fb05493f504d6cce605dbef404d60582f528658421f910f2663d5a57cc69128f40081f71c20814b5bbb75f563e6199

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            137KB

            MD5

            04ded0e98606bcc133f3a5158846d3f6

            SHA1

            3af176f41c969f17ec4f4e5fd4334ca962e87928

            SHA256

            6506fd57dcf549fc755f26660757d363a789a65a0eed0fd1f42772f84bbeae5f

            SHA512

            07c47288658fbc41fa5e5db8d673f52aa8fb05493f504d6cce605dbef404d60582f528658421f910f2663d5a57cc69128f40081f71c20814b5bbb75f563e6199

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            331KB

            MD5

            54d60a425a5a9ded85c4f50b1083e3e3

            SHA1

            5edfd1a3a46f89f3168c3a046831b79f34b6d3aa

            SHA256

            77beaacc046044d0f42a242616e652d693f05a2f41b32f97f995f5249a552f3d

            SHA512

            3a42835abf7f285c74f0292b3ea247abb6743098c6abb807d5c24c456295492cdcc1033b0c707990b288271e7e5d0298d4b08f1894b492f20d8eb3380c20fb72

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            331KB

            MD5

            54d60a425a5a9ded85c4f50b1083e3e3

            SHA1

            5edfd1a3a46f89f3168c3a046831b79f34b6d3aa

            SHA256

            77beaacc046044d0f42a242616e652d693f05a2f41b32f97f995f5249a552f3d

            SHA512

            3a42835abf7f285c74f0292b3ea247abb6743098c6abb807d5c24c456295492cdcc1033b0c707990b288271e7e5d0298d4b08f1894b492f20d8eb3380c20fb72

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            331KB

            MD5

            54d60a425a5a9ded85c4f50b1083e3e3

            SHA1

            5edfd1a3a46f89f3168c3a046831b79f34b6d3aa

            SHA256

            77beaacc046044d0f42a242616e652d693f05a2f41b32f97f995f5249a552f3d

            SHA512

            3a42835abf7f285c74f0292b3ea247abb6743098c6abb807d5c24c456295492cdcc1033b0c707990b288271e7e5d0298d4b08f1894b492f20d8eb3380c20fb72

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            186KB

            MD5

            64589b75a8e94aaa29b021b28fe00402

            SHA1

            026d52f71b2fed03567f119d0e341fa8bfead478

            SHA256

            45455bdefe57f89de8db85a9c746a7caf3e076a307ca2099150a2af17a9efe35

            SHA512

            6d5168fa797c794ff878f35d1b9941d9e597f36f4a9d7dffd3c2e65fe006baec13df683e6f4edd2f077e01708db8cb7e15253577da2219adb02576b7b933cc6f

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            186KB

            MD5

            64589b75a8e94aaa29b021b28fe00402

            SHA1

            026d52f71b2fed03567f119d0e341fa8bfead478

            SHA256

            45455bdefe57f89de8db85a9c746a7caf3e076a307ca2099150a2af17a9efe35

            SHA512

            6d5168fa797c794ff878f35d1b9941d9e597f36f4a9d7dffd3c2e65fe006baec13df683e6f4edd2f077e01708db8cb7e15253577da2219adb02576b7b933cc6f

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            186KB

            MD5

            64589b75a8e94aaa29b021b28fe00402

            SHA1

            026d52f71b2fed03567f119d0e341fa8bfead478

            SHA256

            45455bdefe57f89de8db85a9c746a7caf3e076a307ca2099150a2af17a9efe35

            SHA512

            6d5168fa797c794ff878f35d1b9941d9e597f36f4a9d7dffd3c2e65fe006baec13df683e6f4edd2f077e01708db8cb7e15253577da2219adb02576b7b933cc6f

          • memory/5016-142-0x0000000000320000-0x00000000007BE000-memory.dmp

            Filesize

            4.6MB

          • memory/5016-140-0x0000000000320000-0x00000000007BE000-memory.dmp

            Filesize

            4.6MB

          • memory/5016-169-0x0000000000320000-0x00000000007BE000-memory.dmp

            Filesize

            4.6MB